E-Class Coupe (C207) & Cabrio (A207) 2010-: E250CDI Coupe, E350 Coupe, E350CDI Coupe, E500 Coupe, E550 Coupe [Coupes & Cabriolets]

2017 Coupe spare tire not holding air.

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Old 07-25-2020, 11:38 AM
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E400 C207
2017 Coupe spare tire not holding air.

My C207 that I bought pre-owned has a spare tire that has obviously been used but doesn't have excessive wear. It is not holding air so I am looking at ebay for a replacement. My question is does anyone know if I can use the temporary spare from an E class sedan? It has a different part number (2124000002) versus the coupe 2074000102. The sedan version is coming up about $50 cheaper.



Last edited by Requisiteur; 07-25-2020 at 04:52 PM.
Old 07-25-2020, 03:17 PM
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'71 Pinto
212 is not compatible with 207.




Old 07-25-2020, 03:48 PM
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E400 C207
OK that's too bad but not surprising. Thanks for the info. On the plus side I think I found the cause of the leak (a large staple) and I will try to get the tire patched instead of replaced.
Old 07-25-2020, 04:51 PM
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E400 C207
Update: OK now that I've done some googling I have found three important points that I need to realize:

#1 Temporary spare tires are not meant to be repaired. Apparently the rubber is much too thin to take a rubber rope patch.
#2 The spare tire only has a lifetime of 50 miles of max use. I have no idea how many miles the previous owner drove on this donut spare.
#3 Tires in general have a lifespan of 10 years (unmounted) and 6 years once mounted on a rim, regardless of the miles driven.

Buying a used donut spare will not help with points 2 and 3 and obviously repairing it will not work so I am left with buying a new donut tire from my local tire shop ($175 before taxes and fees).
Old 07-27-2020, 03:03 AM
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2015 E400 Coupe
Thanks for typing this, I had no idea they had a 50 mile life. I have used mine twice and probably put close to that on it. Will get it replaced
Old 07-27-2020, 07:27 PM
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you can get the tire replaced at a local tire shop... T135/80r17 $100-145 new, better than buying a used one...

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